CHEOPS and TESS observations of HD 88986 in 2022 February. The predicted time of HD 88986 b’s second transit event, based on the best-fit model of combining RVs and the photometric light curve of sector 21 (see Sect. 7), is highlighted in blue. Top: CHEOPS photometric data. Second: TESS (black dots) PDC-SAP light curve of sector 48. The TESS data are binned (red points) in 1-hour increments. The potential transit-like feature is marked by a green triangle. The vertical dashed, green lines are the spacecraft momentum dumps. Third: re-extracted TESS light curve (see the text for more explanation). Bottom: zoomed on the potential transit event of HD 88986 b on PDC-SAP (left) and re-extracted (right) data. As the plot indicates, the two light curves are noticeably different. As a result, we did not include those data in our joint analysis presented in Sect. 7.